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Test your basic knowledge |
Dairy Cattle And Reproduction
Start Test
Study First
Subjects
:
industries
,
dairy
Instructions:
Answer 50 questions in 15 minutes.
If you are not ready to take this test, you can
study here
.
Match each statement with the correct term.
Don't refresh. All questions and answers are randomly picked and ordered every time you load a test.
This is a study tool. The 3 wrong answers for each question are randomly chosen from answers to other questions. So, you might find at times the answers obvious, but you will see it re-enforces your understanding as you take the test each time.
1. 10-37 (21) days
pelvis
mare estrus cycle
Lutinizing Hormone in males
#1 cost in production
2. 114 days
sow gestation
cow estrus
humans: stress level vs sperm
ewe's estrous cycle
3. 30-38 hours after estrus cycle begins
cow ovulation
sow ovulation
Bull's fibro-elastic penis
Reasons for gestation length being affected
4. Why Dairy calves are fed powdered milk.
1. more cost effective - 2. powdered milk is in excess production
6-8 weeks
effects of BST
spermatogenesis
5. Front feet and head first. (except for hogs and dogs)
humans: stress level vs sperm
epididymis: definition - 3 parts - 4 functions
Blood
normal presentation of the fetus
6. Earlier you castrate a male - the easier it is on the animal. the longer you wait - death rates increase
elastrator
cervix
age and castration
Testicles will produce testosterone but not sperm. Bull will attempt to mate - but will be sterile
7. Actual heat cycle (period)
Dairy Cattle milking schedule
semen evaluation (BSE)
hormones
estrus
8. The more stressed out the male is - the less sperm he is going to produce
eminal vesicles
humans: stress level vs sperm
butterfat
cervix
9. Indicator of sperm production. the bigger the scrotal circumference the bigger volume of sperm because more seminal vesicles available to produce the sperm
monestrous
scrotal circumference (BSE)
mastitis
eminal vesicles
10. 1. need to be restricted in amt of grain - 2. no more than 70% of ration can be concentrates. 3. *Acidic acid has to be produced in order for milk synthesis to occur (30% forages)
feeding a high producing dairy cow
penis proper
organs used in spermatogenesis
why does the cow need fat deposits during pregnancy?
11. Reproduction. more offspring leads to more feed costs - but is offset by reproduction numbers
things to check for in a breeding soundness exam (BSE)
#1 cost in production
Where livelihood is in agriculture
Brown Swiss Cow
12. (male) definition: duct located outside of the testes. 3 parts: head - body - tail. 4 Functions:concentrate sperm - store sperm - transport sperm - site of sperm maturation. entire process takes ~40-60 days
sertoli cells
epididymis: definition - 3 parts - 4 functions
Follical Stimulating in females
seminiferous tubules
13. BST given to dairy cattle makes the mammary gland more persistent - helps produce more milk. good as Long-term because it does not cause cow to bulk up - provides more milk/cow Which means less cows needed - less cows need to be given feed - lower co
effects of BST
seasonally polyestrous
kidney stones also called ________ ___________ can develop in the sigmoid flexure
testosterone
14. Provide nourishment for the developing sperm
Lutinizing Hormone in males
cervix
colostrum
sertoli cells
15. Sperm production
Sperm survival specs
castration
spermatogenesis
~1 month
16. 1-2 days
cowper's gland
sow ovulation
ewe ovulation
ewe estrus
17. Days which have decreasing daylight hours
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18. Male on one pin and female on other side
dartos muscle
libido test (BSE)
functions of progestrone
cow ovulation
19. What helps regulate spermatogenesis?
sperm cell
testosterone
sow gestation
semen evaluation (BSE)
20. Front feet and head first. (except for hogs and dogs)
Bull's fibro-elastic penis
ewe gestation
#1 cost in production
normal presentation of the fetus
21. 26 hours after estrus begins
leydid or interstitial cells
prostate gland
ewe ovulation
scrotum
22. Castration tool that uses a band around the testicles which cuts off circulation and eventually the testicles fall off
effects of estrogen
age and castration
elastrator
burdizzo
23. 14-19 (17) days
stag
ewe estrus cycle
effects of estrogen
#1 cost in production
24. Animals which have only one estrous cycle (ex: dog - fox)
mare's estrous cycle
effects of estrogen
rectal palpation (BSE)
monestrous
25. Cleans and lubricates the urethra. secretion is thick - viscous - and very slippery.
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26. Birthing process (termination of gestation)
mare gestation
scrotum
sertoli cells
Parturition
27. Knife-loose ~1wk of growth. band-loose ~2wks of growth.
scrotal circumference (BSE)
Follical Stimulating in males
monestrous
growth lost from castration methods (knife & band)
28. 265-285 days
Dairy Cattle Gestation
Mares
uterus
cowper's gland
29. Castration tool that uses a band around the testicles which cuts off circulation and eventually the testicles fall off
ewe estrus
elastrator
growth lost from castration methods (knife & band)
cow gestation
30. Start of the reproductive tract for the female. located outside of the body
polyestrous
organs used in spermatogenesis
semen evaluation (BSE)
vulva
31. What about the sperm for a bull which has been castrated but still has testicles?
Testicles will produce testosterone but not sperm. Bull will attempt to mate - but will be sterile
humans: stress level vs sperm
cowper's gland
reason for seasonal breeding periods
32. 1. reproduction - 2. mastitis/udder problems - 3. low milk production - 4. soundness/poor feet and legs (living on concrete)
rectal palpation (BSE)
sow ovulation
4 major reasons for culling dairy cows
cow estrus
33. Duct through penis that carries sperm and urine
libido test (BSE)
Hormones from both the fetus and the mom.
urethra
van deferens
34. Standing to be mounted (last one able to notice); mounting other animals; social behavior-restless - gregarious - activity - vocalizing; frequent urination; mucous discharge
behavioral signs of estrus
vulva
age and castration
sow gestation
35. Failure to have both testis (gonads) descend
cryptorchid
cow ovulation
#1 cost in production
sow ovulation
36. Failure to have one testis (gonad) to descend
estrus
Dairy calves are removed from cow at birth to...
monorchid
polyestrous
37. 1. seminiferous tubules - 2. sertoli cells - 3. leydid or interstitial cells
cow gestation
why does the cow need fat deposits during pregnancy?
dartos muscle
organs used in spermatogenesis
38. When she is pregnant in her last trimester because she needs the energy to carry around and deliver the calf. and when the calf is born because the cow needs the fat to be deposit it into her milk for the calf's energy stores.
why does the cow need fat deposits during pregnancy?
ewe's estrous cycle
humans: stress level vs sperm
scrotum
39. Reproduction. more offspring leads to more feed costs - but is offset by reproduction numbers
Where livelihood is in agriculture
prostaglandin
butterfat
visual evaluation (BSE)
40. % of fat in milk. makes cheeses and ice cream. regulates cost of milk
Avg. bull specs
Follical Stimulating in females
sperm cell
butterfat
41. ~60 days before calving
semen evaluation (BSE)
dry matter and water
dry-off time in dairy cattle
Grading choice
42. Hold the penis in the bulls body when not in use. releases penis before ejaculation or urination.
feeding a high producing dairy cow
mare ovulation
Blood
retractor muscles
43. Head - neck - mid-piece - tail. genetic material - has an enzyme covering that allows it to penetrate the egg
Bull's fibro-elastic penis
Hard
elastrator
sperm cell
44. (male) Primary sex organ - produces sperm (male gamete) and male sex hormones - 2 total
sigmoid flexure
testis (gonads)
penis proper
dry matter and water
45. Animals which have many estrous periods per year (ex: cow - sow)
Culls bulls earlier (2 reasons)
Lutinizing Hormone in males
Dairy Cattle milking schedule
polyestrous
46. Check feet and legs - look for masculine traits in build such as crest and muscling
dry matter and water
monestrous
cow estrus
visual evaluation (BSE)
47. 147 days
vagina
ewe gestation
monorchid
ewe's estrous cycle
48. 1. visual evaluation - 2. scrotal circumference - 3. penis and prepuce observation - 4. rectal palpation - 5. libido test - 6. semen evaluation
Sperm growth rate
sow gestation
things to check for in a breeding soundness exam (BSE)
cow gestation
49. Implies the amount of estrogen production
effects of BST
sow estrus cycle
elastrator
femininity of a heifer
50. Earlier you castrate a male - the easier it is on the animal. the longer you wait - death rates increase
age and castration
seminiferous tubules
Dairy Cattle milking schedule
mare gestation